In this post raspberry pi 3 b running raspbian stretch is used.
Usb to uart cable for raspberry pi.
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To connect raspberry pi s gpio pins and usb serial cable.
In the next lesson we will look at another way of doing much the same thing but over a local network using something called ssh.
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Usb to serial uart converter cable such as this.
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Be sure to select the 3 3v option before connecting to raspberry pi.
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If a 5v usb serial board is used the ttl port channels of rpi can get permanently damaged.
In this post a windows 10 pc is used.
Inside the big usb plug is a usb serial conversion chip and at the end of the 36 cable are four wire red power black ground white rx into usb port and green tx out of the usb port.
Some usb serial boards offer jumpers that can be set between 5 and 3 3v uart voltages.
The one for use with raspberry pi must have 3 3v uart voltages.
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The raspberry pi uses its built in serial port to allow devices to connect to its console and issue commands just as if you were logged in.
Upon inspection there is a usb connector with usb 2 0 full speed compatibility and 3 single pole 0 1m pitch header that connects to a serial port on the raspberry pi board.
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The cable is easiest way ever to connect to your microcontroller raspberry pi wifi router serial console port.
